Machine for applying adhesive medium to envelopes, wrappers, and the like



Oct. 23 1923.

H. C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM T0 ENVELOPES,WRAPPERS, AND THE LIKE Original Filed Oct. 4. 1920 5 Sheets-Sheet 1 H.C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM '10 ENVELOPES, WRAPPERS,AND THE LIKE OcL 23, 1923. 1,471,722

7 H. C. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM TO ENVELOPES,WRAPPERS, AND THE LIKE Original Filed Oct. 4. 1920 5 Sheets-Sheet 5 Oct.23 1923.

H. c. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM T0 ENVELOPES,WRAPPERS, AND THE LIKE Original Fil'ed Oct. 1920 5 Sheets-Sheet 4 El-PfGet. 23 1923. 1,471,722

H. c. BROOKS MACHINE FOR APPLYING ADHESIVE MEDIUM TO ENVELOPES,WRAPPERS, AND THE LIKE Original Filed Oct. 4, "1920 5 Sheets-Sheet 5Patented Oct. 23, 1923.

lA'ZiJZ- HERBERT CHARLES BROOKS, OF CLAPI-IAM, *LOBIBCiTQENGiL-AND,ASSIGNOR OF ONE HALF TO HAROLD OF HZGEEIEEELD, SURREY, ENGLAED.

MACHINE roe. ArPLYrnc. n iiEslvniinnin a rc n rvnnornsjwnnrrnns, Ann THEa LIKE.

Application filed october 4, 1320, eeln no. 41 4 5 39. Renewed Februarye, 1923.

Britain and Ireland, residing at Glaphani,

5 London, England, have invented Improve:

ments in Machines for Applying Adhesive Medium to Finvelopes, W rappers,and the like, of which the following is a specification.

This invention relates to machines of the kind in which the individualblanksfof a pile of enevelope blanks or the like, destined to be'gumined by a shaped glimmer, are successively dislodged by suction,devices and delivered to aconveyor.

Heretofore arrangements of this kind have necessitated complete removalof one blank from the pile, however arranged, beiore the suction devicecan act to engage and dislodge another blank. so that the processisrelatively slow. i

The object of the-present invention which has a correspondingly wideapplication is to ejnable operations to proceed at greater speed andwith a minimum of attention, to which. end it is arranged thatthesuction device or devices shall rotate adjacent to the end of thepile of blanks to be dealt with, in a mannersuch -that the individuallanks a fi urg d 11w d est eopps to that in which they are ultimatelyltobe conveyed, with the result, that each blank is appreciably buckled;whilst held; at the summ an -thu pr mp y broug t i t c i h th gr p iesfmn fq r menas me, wh ns-unne s a i u'n l on .b ankii en ely ar of then-".b er the nextblank can be dislodged.

A further feature of the invention con sists is supporting the of blanksupon a table adapted to rise under. the action of means controlledelectro-magnetically through a switch in accordance with the diminishingheightoi the pile, The sucti ni v c als d ine' the i d vidual blanks ofthe pile are carriedby a um re lvin ab u a s a nary h l w ported shaft,the interiorof which-is being continuously exhausted, the suctiondevices being thus rendered operative duringa portioiioi a revolution ofthe drum.

But in orderthat the invention .may be more readily understood it willnow befur: ther described with reference tofone conv CnARLns' Bnoons, asubject. of the King of Great structional example illustrated. in theaccompanying drawings, whereof Figs. 1 and 2 areelevations atrightangles to one'another of the machine complete. Fig. '3 is a planview of the same with parts removed. Flg. 'is an elevation of parts ofthe machine to the ,le'ft of the line 44 F 1. Fig. 4? is aperspectiveview of part of Fig.

4:. Figs. 5 and v6 are respectively a sec table being partiallycounterbalanced by n weights 0 at the end of flexible connections dpassing over sheaves c. The table: a carries the pileofblanks f and iscaused to rise in accordance with the diminishing size oi'lj'thepilebyany suitable means controlled electromagnetically througha'switch, one member .wvliereoi rests upon the top of the pile which isthus maintained. at substantially one predetermined level; In the'example such table ra1sing means-comprlses'a ram g, the cylinder itwhereofis adapted to'be V supplied with water from anyconvenient source,here assumed to be derived frpmjan' ordinary service main, through apipe 71 provided with a valvej and shown as exemllns'ii e k wh e we rl sin communication with a pipe m for ad mission to the cylinder it, suchcock in another position serving to place thefpipe m incommunicationwith a discharge p pe a whenjit is desired to exhaust the cylinder andallowthe table a to descend. The stem 0 of the valve y'which has only aminuate movement, is pivotally connected to a lever pprovided with anarmature rand with a counter-balancing weight 3, the said armature beingassociated with an, electromagnet t shown diagrammatically in Figs. 5"and 6 as in circuit with a battery it one pole whereof is connected ,toa resilient blade o.

carried by an insulator w 5) from a cross stay 0a of the machine. -lhisblade,

which bears upon the top or" the pile of blanks, carriesfa contact iyadapted to enag som Pa th m hine i th case a drum 2, when the top of thepile is at the predetermined level required so that the circuit of theelectroinagnet t is complete to earth, at which time theelect-ro magnetis energized and acts to close the valve j thereby arresting ascent ofthe table (6. Removal of a blank from the pile however causes thecontact y to open the circuit,

' stateckforms no part per se of the present invention is shown at 2,being carried by a triangular frame ,3 pivoted at 4 within adjustablebracket bearings 5 mounted upon the stationary longitudinal members 6towhich the cross stay 00 is secured. The pressure which the gummer 2 mayexert upon the pile of blanks is capable of being adjusted by thecounterbalancing weight 7 The blank-withdrawing device comprises asuction mouth arrangement exemplified, as will be clear from Figs. 3 and4, by two pairs otnozzles 8 one pair being disposed longitudinally ofthe: drum 2 before referred to.

and diametrically opposite the other pair. Each nozzle 8, as shown'inFig. 5, is fitted with a sleeve 9, retractableto a slight degree againstthe action of a spring '10 and carrying a rubber or other resilientmouth piece 11. The drum 2 is mounted to rotate upon a hollow shaft 12closed at the ends and held, without possibility of rotating, by arms 13upon the cross stay as the interior of the said shaft 12 being exhaustedof air by any suitable meansconnected to the pipe 1 1. The shaft 12 isprovided with ports one of which is shown at 15 so located that as anozzleS reaches a position where the mouth piece-11 can engage a paperblank, it is in communication with the hollow shaftso that air isexhausted therefrom and the blank sucked up. Continued rotation of thedrum 2 moves the suction nozzles clear of the said exhausting ports 15so that the raised blank is released. The release of the blank is timedto occur at or near the instant when and sprocket gear 23 with a maindriven shaft 2a. The drum 2 is driven by chain and sprocket gear 25 fromthe shaft 22 which latter carries 'aroller 26 similar to rollers 27 onother shafts 28, 29 around which travel bands 30, 31 adapted to delivera blank ultimately on to belts 32. The undersides of the bands 16 travelin the same direction asthe upper sides of the bands 30 which theyoverhang and in order therefore that a blank after being gummed can bereadily transferred from the pile to thebands30, 31 it is non-revolubleshaft 35 fitted with a cam 36 I of the shape shown in Fig. 7. Each cheekmember 33, which bears against the corresponding belt 16, is slotted at37 to receive a sliding arm 38 each arm having a pin 39 projectinglaterally through a slot 40 and connected to one end ofa correspondingspring 41. anchored at 42 to the cheek member The arrangement is suchthat as long'as either pin 39 bears, upon the edge of the cam which isconcentric with the aXis of the spindle 3 1. the spring 41 connectedthereto will be elongated as shownat the upper part of Fig. 7. and thearm 38 with drawn. Assoon however as the cheek member 83 has rotatedsufliciently iarto cause the slot 40 to lie more or less parallel to theflattened edge 13 ot the cam the pin 39 will be free to travel along theslot, the spring consequently quickly shooting the arm 38 out beyondtheperiphery of the member 33 as shown at the lower part of Fig. 7. Whenthe pin 39 upon further rotation of the mem ber 33 engages the edge 44of the cam it will lag in the slot 40 until the-opposite end of suchslot is reached at which time it will have completely extendedthespring41 and moved to the concentric edge of the cam, which as previouslyexplained, will maintain the arm 38 retracted. By appropriate angularadjustment of the cam 36 it will be obvious that the projection of thearms 38 can be made to occur at a position best suited to deal with theblanks. Here it will be con venient' to explain with the aid of Fig. 9the operation of removing the blanks. \Vhen the drum .2 occupies theposition (a) the uppermost blank which at the other end is being held bythe gumming device 2 will notwithstanding a very slight angular movementof the nozzles 8, have become appreciably buckled, somewhat as shown.This buckling rapidly increases and becomes more localized towards thenozzles 8 as positions (7)) and (a) are reached. The release of theblank from the nozzles Stakes place about position (0) at which time thearms 38 of the cheek member 33 will be found projecting to direct theblank into contact with the bands .lfiwhich as alreadystated willthereafter clamp the blank upon the cheeks andrapidly convey it to thebands 30, 31.

To facilitate dealing with blanks of differ ent shapes the hollow shafts35 whereinthe spindles 34: of the check members 33 revolve,

are mounted in bearings 45 adjustable along the frame members 6, thespindle 34 being driven from the shaft 22 by chain and sprocket gearing46 comprising a twin idler 47 mounted upon the pivot 4:8 of acollapsible link holder 49 whereby the drive is maintainable withoutaltering the length of chain or otherwise interfering with the gear.

vThe part of the table a upon which the pile f ofblanks: is directlyreceived may be gummer as described, the gummer may be associated with astationary table beneath the pile of blanks which descends as a whole,the gum being applied to the underside of the lowermost blank which isdisplaced by the suction device in a manner analogous to that described.

What I claim is 1. The herein described method of applying an adhesiveto a pile of paper blanks by means of a shaped gummer which consists inurging the said pile of blanks against the shaped gummer so that theyare held thereby,

by the gummer to a buckling action in a direction opposite to thatinwhich it is to'be 40/ I providing for thelateral withdrawal from] saidgummer of a blank in contact there with and subjecting saidblank whilstheld withdrawn in such wise that the blank is thereby directly broughtinto contact withthe withdrawing means, the successively gummed blanksover-lapping and being separated only sufiiciently to prevent one beingfouled by the gum upon another, as set forth.

2. A machine of the kind described, com

prising a relatively fixed but yieldingly mounted shaped'gummer, meansfor urging a pile of blanks into contact with said gum:

mer so that the outermost blank of thepile is held thereby, continuouslyoperatingvgripping means contiguous to edges of the blanks to oppositesides of the gummer and adapted to withdraw a blank in one directionaway from the gummer and means 'opcrating in the space between saidgripping means for urging the blank that is being held by the gummer ina direction opposite to that in w ich the gripping means subsequentlyeffect withdrawal and adapted to so buckle the said blank that itisbrought directly thereby into contact with the gripping means,substantially as described,

Signed at London, England, this 15th day of September, 1920. i

HER-BERT CHARLES BROOKS.

